Motorized Base for Triple Gears

prusaprinters

<figure class="media"><oembed url="https://www.youtube.com/watch?v=7R4mxStvbb8"></oembed></figure><p> </p><p>This is a a motorized base for <a href="https://www.thingiverse.com/thing:66708">https://www.thingiverse.com/thing:66708</a></p><p>I remixed the base at <a href="https://www.thingiverse.com/thing:78218">https://www.thingiverse.com/thing:78218</a> to make the top part that interfaces with the gears (adding a corner that matches the base so it stays in place), and for a short shaft with a flat face to match up with a D shaft on the motor.</p><p>I originally planned on using a Neopixel ring inside the base, but ended up not doing that. The motor driver could probably be implemented with just a 555 timer, but since I was planning on doing the LEDs, I already had it set up to use an Arduino (specifically an Arduino Pro Micro).</p><p>Code for the Arduino is at <a href="https://github.com/m000z0rz/triple-gear-motorized-base">https://github.com/m000z0rz/triple-gear-motorized-base</a> It doesn't do much - just checks a switch on the back to enable/disable the motor driver, reads the potentiometer value and uses that to drive a PWM signal for the motor, which is driven by a MOSFET.</p><p>Onshape design at <a href="https://cad.onshape.com/documents/0552dfa4b1d7c192a6e305b0/w/114c4090becab26200c3d38f/e/3de8c1beb8d372082bc91e2f">https://cad.onshape.com/documents/0552dfa4b1d7c192a6e305b0/w/114c4090becab26200c3d38f/e/3de8c1beb8d372082bc91e2f</a></p><p> </p><p>Parts:</p><ul><li>Arduino Pro Micro <a href="https://www.amazon.com/HiLetgo-Atmega32U4-Bootloadered-Development-Microcontroller/dp/B01MTU9GOB/ref=sr_1_2?crid=17HWSD3BG4VDS&amp;keywords=arduino+pro+micro&amp;qid=1640138581&amp;sprefix=arduino+pro+micro%2Caps%2C100&amp;sr=8-2">https://www.amazon.com/HiLetgo-Atmega32U4-Bootloadered-Development-Microcontroller/dp/B01MTU9GOB/ref=sr_1_2?crid=17HWSD3BG4VDS&amp;keywords=arduino+pro+micro&amp;qid=1640138581&amp;sprefix=arduino+pro+micro%2Caps%2C100&amp;sr=8-2</a></li><li>Motor <a href="https://www.amazon.com/gp/product/B0080DOEQU/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&amp;psc=1">https://www.amazon.com/gp/product/B0080DOEQU/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&amp;psc=1</a></li><li>IRF520N MOSFET to drive the motor <a href="https://www.amazon.com/gp/product/B082J3F8HJ/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&amp;psc=1">https://www.amazon.com/gp/product/B082J3F8HJ/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&amp;psc=1</a></li><li>Three small rubber feet <a href="https://www.amazon.com/gp/product/B07CNQC695/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&amp;psc=1">https://www.amazon.com/gp/product/B07CNQC695/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&amp;psc=1</a></li><li>A Schottkey diode harvested from something for motor protection</li><li>A potentiometer harvested from something random</li><li>A two-position switch harvested from something random</li></ul><p> </p>